abstract architectural backdrop background barrier brick brick-wall bricks brickwork builders building cement coloring colors colouring colours concrete constructed construction-work exterior external firm holes hollow linear lines mortar perspective perspectives rectangular rough secure security standard strength strong style surface surfaced surfaces texture textured textures uneven variation varied wall walled wallpaper angles appearance architecture brown color colour contrast contrasting corrosion corrugated corrugations dark decay deterioration elements metal old rust rusty variations wearing weathering decorative display energy foliage footpath glass lamp lamp-post lamppost light lighting lights outdoor outdoors protected protection protective round rounded safety shapes shine street street-light styles suburban suburbs trees urban colored coloured multicolored multicoloured raised smooth blocks fitted large layered layers porous rock rock-wall rugged sandstone sedimentary-rock shade shadows shaped solid stone stonework sunlight sunshine weathered well-built adhering cracked cracking cracks curved drill-holes modern mottled split splitting various basic building-material composite fading partial partially-painted symmetry white blue